Chapter 6: Troubleshooting - Brother 3034D Manual De Instrucciones

CHAPTER 6
TROUBLESHOOTING
This sewing machine is designed for trouble-free operation. However, the following chart indicates trouble
which may occur if basic adjustments are not made properly.
Trouble
1. Does not feed
2. Needles break
3. Threads break
4. Skipped stitches
5. Stitches are not uniform
6. Fabric is puckered
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Cause
Presser foot pressure too loose
1. Needles bent, or needle tip blunt
2. Needles incorrectly installed
3. Material pulled forcibly
1. Improper threading
2. Thread tangled
3. Thread tension too tight
4. Needles incorrectly installed
5. Wrong needle used
1. Needle bent, or needle tip blunt
2. Needle incorrectly installed
3. Wrong needle used
4. Improper threading
5. Presser foot pressure too loose
Thread tensions are not adjusted
properly
1. Thread tension too tight
2. Improper threading or thread
tangled
Remedy
Turn the pressure adjustment screw clockwise to
increase the presser foot pressure. (See page 9.)
Replace with new needle. (See page 13.)
Install needles correctly. (See page 13.)
Do not press or pull material too hard when
sewing.
Thread correctly. (See pages 15-18.)
Check spool pin, thread holders, etc. and
remove tangled thread.
Adjust the thread tension. (See pages 10-12.)
Install needles correctly. (See page 13.)
Use correct needle
Schmetz 130/705H - suggested (See page 13.)
Replace with new needle. (See page 13.)
Install needle correctly. (See page 13.)
Use correct needle.
Schmetz 130/705H - suggested (See page 13.)
Thread correctly. (See pages 15-18.)
Turn the pressure adjustment screw clockwise to
increase the presser foot pressure. (See page 9.)
Adjust the thread tension. (See pages 10-12.)
Decrease thread tension when sewing lightweight or fine
material.
(See pages 10-12.)
Thread correctly. (See pages 15-18.)